noun
person with a reservation; booker; subscriber
Refers to someone who has made a reservation or booking, or a subscriber to a service or publication.
予約者には確認のメールが送られます。
A confirmation email will be sent to those who made a reservation.
この雑誌の予約者は毎月最新号を受け取れます。
Subscribers to this magazine receive the latest issue every month.